Improvement in collapsing core-barrels



"lutcd tant WtLLIAM surta, or rrrrscuae, PENNSYLVANIA.

Letters Patent No. 111,091, dated January'l?, 1871.

IMPROVEMENT IN COL-LAPSVING CORE-BARRELS.

The Schedule referedto in these Letters Patent: and making part of thesame.

To all whom 'it may concern:

, 13e it known that I, WILMAM Sitten, of Pittsburg, in the county ofAllegheny and State of Pennsylvania, have invented a new and usefulImprovement in Oollapsng Oore-Barrel; and I do hereby declare that thefollowing is a full, clear, and exact description thereof, referencebeing had to the accompanying drawing and to the letters ot' reference'marked thereon. v

The nature of my invention consists in a core-barrel constructedin'sections, two of which are hinged together and held to the desireddiameter, through the medium of a wedge-shaped section, and contractedor collapsed by drawing the wedge-shaped section eudwise.

To enable others` skilled in the art to make and use my invention, Iwill proceed to describe more fully its construction and operation.

f In thel accompanying drawing which forms part of my speciiication. i

Figure l is a side and vertical elevation of my improvement incollapsing core-barrel;

Figure 2 represents a vertical elevation ol"- an ordinary core-box, whenopened out.

Figure 3 is a vertical section of the core-barrel and its box whenarranged on' a base preparatory to ramming the sand around the barrel.

Figure 4 is an end view of the core-barrel. Figure 5 is an end ,view ofthe core-barrel and its box. i

In the accompanying drawing-- A and l5 represent the two main mainsections of the core-barrel, and are hinged at C, as shown in tigs. 4and 5, and are also provided with slides or grooves, as indicated at D,in which move tongues X of the wedge-shaped sect-ion E.

To the back or inner side ot the section E are attached two chains, f,whichare connected to two chains y, which are attached to" the sectionsA and B at 7L.

The wedge-shaped section E has three parts inL clined, to wit, the twoedges and the inner side. This is clearlv indicated in lig's. 1, 4, and5.

This arrangement of iuclines will cause the edges d m of sections A andB to press against the edges a ot' section E, when drawing it`endwisefor the purpose ot collapsing the core-barrel.

In preparing the core, the vseveral sections of the core-barrelvarearranged with the wedged section E in the position between the sectionsAanzl B, as shown in tig-.1. p

The core-barrel is thenv placed on the basel, and the core-box placedaround it, as shown in fie'. 3. The sand is then rammed around thecore-barrel in the usual manner. i

The core-barrel may be constructed of wrought or cast-i1'ou,and shouldbc'i'urnishedwith perforations or vent-openings, as indicated at S. i

The core-barrel is collapsed by drawing the wedgeshaped-section Eondwise, as indicated in tiff. 3, which,

drawing on the chains f and g, will draw the sections A and B in, so asto contract or diminish the diameter of the core-barrel that it may withcase and facility be withdrawn from the pipe or -other casting.

By making the 'surface of the core-barrel without the openings S, .andgiving the wedge-shaped section a greater inclination on the partsdescribed, and coating the eorefbarrel with asuitable material, it maybe used as a hollow metallic core,the advantage of which will beapparent tothe'skilled melder and manufacturer of pipe and other tubularcastings.

Having thus described the nature, construction, and operation of myimprovement,

Wha-tl claim is- A core-barrel, one section of which is provided withthree inclinations and moves in slides or grooves, and connected to theothersections of it by means oi' chains or t-heircqnivalent, the wholebeing so constructed and arranged,tl1at, by drawing cndwise the sections'with three inclinations, it will collapse or diminish the diameter ot'the core-barrel, as herein described.

'TILLIABI SMITH.

lVit-nesses:

A. C. J onNsl'oN, .Tantas J. JonNsroN.

